Belt-shifter.



S. MOE.

BELT SHIFTBR.

APPLICATION FILED SEPT. s, 1910.

Patented Nov. 24, 1914.

2 SHEETSSHEET 1.

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BELT SHIFTBR.

APPLIUATION FILED sBPTIe, 1910.

1, 1 1 8,434. Patented Nov. 24, 1914.

m 2 SHEETS-SHEET 2. j g 5 UNITED STATES PATENT OFFICE.

i SIVERT MOE, OF CHICAGO, ILLINOIS.

BELT-SHIFTER.

and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in belt shifters, particularly adapted for use in connection with ironing machines, and has for its object to provide certain improvements in the construction of the same as will be hereinafter more definitely pointed out and claimed.

In the drawings: Figure 1 is an end elevation of a machine embodying my invention. Fig. 2 is a top plan view thereof with parts broken awav. Fig. 3 is an enlarged vertical section of the driving pulley and part of the belt shifting mechanism. Fig. 4 is an enlarged side elevation of the automatic belt shifting mechanism. Fig. 5 is an enlarged vertical section of the same. Fig, 6 is a top planview of the shiftingmechanism with parts in horizontal section. Fig. 7 is an enlarged fragmentary detail of a part of the shifting mechanism.

As shown in the drawings: 1-1, indicate standards or frame members, which are rigidly connected at the bottom by means of rods 2. Rigidly secured to the frame in any suitable manner are guides or ways 3-3, on which the ironing board or table 4, reciprocates. frame and frictionally engaging the top of the board is a roller 5, which may be heated by steam, gas or electricity, as preferred, but the heating mechanism is not shown, as it forms no part of this invention;

Journaled below the ironing board and frictionally engaging the same is a roller 6, greater in diameter than the roller 5, and which is in vertical alinement therewith and cooperates therewith to reciprocate said ironing board. Said roll 6, also relieves the ironing board of any excessive pressure, which may be exerted by the heated roller thereon.

A driving shaft 7, is journaled to the frame on the inner end of whieh is secured Specification of Letters Patent.

Journaled centrally of the Patented Nov. 2d, 1914.

Application filed September 6, 1910. Serial No. 580,684.

a pinion 8, which meshes with a gear 9, on the shaft of the roller 6, and said gear meshes with a pinion 10, on the shaft for the heated roller '5. The ratio of said gear 9, and pinion 10, is such that the peripheral speed of the rollersis the same. A pulley 11, is keyed on the outer end of the shaft 7, and pulleys 12 13, are loosely mounted on the shaft, one on each side of the rigid pulley. Oppositely. rotating belts 14c-15, are trained around the appropriate pulleys and. engage a belt shifter which is slidable on the shaft 7. A belt shifter 16, is rigidly connected to a slidable collar 17, on the shaft 7 ,linside the standard 1, by means of a rod 18, which extends through a suitable slot or aperture in the standard.

' A lever 19, slotted at one end and engaging a pin 20, secured to the collar 17, is pivotallysupported between the arms of a yoke 21, by means of a pin 22, which projects beyond both arms. A shifting bar 23, is pivoted to the ends of the pin 22. by means of lugs 24, and is provided with fingers 2525 integral therewith, adapted to contact with said lever 19, on oppositevsides of the pivots therefor and throw the slotted end of said lever oppositelv depending upon the direction said adjusting bar is rocked. For the purpose of rocking said bar 23, adjustable tappets 26-27, are secured to the ironing board in position to contact the upper end of the rock or shifting bar. For the purpose of quickly rocking the bar to quickly operate the lever in shifting the belt, a spring 28, is secured at one end to the frame and at its opposite end to an arm 29, integral with the rock bar 23.

WVhen the arm 29 is on either side of a dead center, the spring 28 will quickly pull the bar 23 into an extreme position. The tappets 26, 27, bring the said bar to a central position against the spring tension, but the spring having rotated together with said bar now exerts a turning strain tending to throw said bar into position at a greater speed than the action of the tappet would produce.

The operation is as follows: In the position shown in Fig. 2, the ironing board has traveled to one limit of its movement and the tappet 27, has actuated the rock bar 23, to swing the lever 19, to slide the collar on the shaft 7, and thereby shift the belt 15, onto the rigid pulley and belt 14, onto the loose pulley. The rollers 5 and 6, now r0- tate oppositely from their former direction of rotation, and, owing to their frictional engagement with the ironing board, said board is reciprocated until the tappet 26,

engages the rock bar 23, which immediately throws the finger 25 to engage the end of the lever beyond the pivot point and to swing the lever 19, to slide the collar 17, and belt shifter to shift the belt 15, onto the loose pulley l3, and the belt 14, onto the pulley 11, thereby reversing the machine. Just after the finger 25 or 25*, has engaged the lever 19, and started to swing the same, the spring is pulled to one side or the other of a center line through the pivot point and then acts to snap the rock bar to quickly swing the lever, thereby acting as an auxiliary means for quickly effecting the reverse. 0f course, as long as the machine is in operation, the reciprocating ironing board automatically operates the shifting mechanism to effect the reversal of drive and by adjusting the tappets the point of reversal may be regulated to suit the requirements of the user.

Many details of construction may be changed and I therefore dojnot desire to cured to said frame, a curved lever having a slot in one end adaptedto engage said pin, the other end pivoted to and projecting beyond said bracket, a rocking bar pivotedin said bracket, fingers on said bar adapted 2 to alternately contact said lever, a spring connected to sald bar, and means for reciprocatmg said rocking bar and s1multa neously shifting said spring to opposite sides of the pivot of said bar.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

IV BT M Witnesses:

CHARLES W. HILLS, J r., LAWRENCE REI strnrN.

Copies of this patent may. be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. G. v 

